WO2019030996A1

WO2019030996A1 - Photovoltaic system and photovoltaic panel attitude control method

Info

Publication number: WO2019030996A1
Application number: PCT/JP2018/017496
Authority: WO
Inventors: 賢一北山
Original assignee: 住友電気工業株式会社
Priority date: 2017-08-09
Filing date: 2018-05-02
Publication date: 2019-02-14
Also published as: TW201911733A

Abstract

This photovoltaic system is provided with: a photovoltaic device group formed by arranging a plurality of photovoltaic devices including a concentrator photovoltaic panel and a support device for supporting this photovoltaic panel in an attitude controllable manner; and a control unit having a function of, on the basis of information about wind at the site where the photovoltaic device group is installed, instructing the support device on an attitude to be taken by the photovoltaic panel of each of the plurality of photovoltaic devices. When a photovoltaic panel is present that needs to take a predetermined standby attitude, the control unit increases, on the basis of the information, the number of photovoltaic panels taking the standby attitude to a required number in a step-by-step manner.

Description

Photovoltaic system and attitude control method of photovoltaic panel

The present invention relates to a photovoltaic system and a posture control method of a photovoltaic panel.
This application claims priority based on Japanese Patent Application No. 2017-153873 filed on Aug. 9, 2017, and incorporates all the contents described in the aforementioned Japanese application.

Condenser type photovoltaic power generation (CPV: Concentrator Photovoltaic) is based on a configuration in which sunlight is condensed by a Fresnel lens or the like to be incident on a small power generation element with high power generation efficiency to generate power. A large number of light collecting solar power generation modules configured by arranging a large number of this basic configuration in a matrix are further arranged in a large number to form a light collecting solar power generation panel (array) (see, for example, Patent Document 1). A concentrator photovoltaic panel is supported by a support device that can be driven in two axes, elevation and azimuth, to track the sun.

JP 2014-226025 A

A solar power generation system according to an embodiment of the present invention includes a solar power generation device group including a plurality of solar power generation devices arrayed including a light collecting solar power generation panel and a support device supporting the panel so as to be capable of attitude control. And a function of instructing the supporting device on the posture to be taken of the photovoltaic panel in each of the plurality of photovoltaic devices based on the information on the wind at the place where the photovoltaic group is installed. And the control unit is configured to set the solar cell panel in the retracted position when the solar panel needs to be in the predetermined retracted position based on the information. Solar power generation system, increasing the number of in stages to the required number.

Further, according to one aspect of the present invention, there is provided a method of controlling the attitude of a photovoltaic power generation panel, the solar power generation panel including a plurality of solar photovoltaic power generation devices supporting a concentration type solar power generation panel by a supporting device. A posture control method for photovoltaic power generation panels, which is executed by a control unit that comprehensively controls the postures of the respective photovoltaic power generation panels in the power generation equipment group, wherein wind at a place where the photovoltaic power generation equipment group is installed If there is a photovoltaic panel that needs to obtain information on the above and based on the information, it is necessary to take the number of the photovoltaic panels in the retracted position in a stepwise manner. If the solar panel is in a state in which the solar panel is in the retracted position, it is in the retracted position when the need for the retracted position is eliminated based on the information. The number of serial photovoltaic panel, reducing stepwise, a posture control method for photovoltaic panels.

FIG. 1 is a perspective view of one concentrating solar power generation apparatus as viewed from the light receiving surface side. FIG. 2 is a perspective view of one concentrating solar power generation apparatus as viewed from the back side. FIG. 3 is a connection diagram showing an outline of the electrical connection relationship. FIG. 4 is a perspective view showing an example of a state in which the light receiving surface of the photovoltaic panel faces the sun. FIG. 5 is a schematic view showing a solar power generation system including, for example, a total of 64 solar power generation device groups, in which eight solar power generation devices are arranged, for example, eight each vertically and horizontally. FIG. 6 is a diagram showing the photovoltaic power generation system in a simplified manner and represented by square symbols, in which one row is in the retracted position. FIG. 7 is a diagram showing the photovoltaic power generation system in a simplified manner and represented by square symbols, in which two rows are in the retracted position. FIG. 8 is a diagram showing the photovoltaic power generation system in a simplified manner and represented by square symbols, in which seven rows are in the retracted position. FIG. 9 is a diagram showing the photovoltaic power generation system in a simplified manner and represented by square symbols, and is a diagram showing a state in which all the rows are in the retracted posture. FIG. 10 is a diagram showing a change in generated power when all the units take a retreating posture simultaneously due to strong wind for comparison. FIG. 11 is a diagram showing a change in generated power when the retracting posture is taken step by step in a row in the manner of FIG. 6 to FIG. FIG. 12 is a diagram showing a change in the generated power when shifting to the retracted posture in a step-by-step manner, with the time of one step shortened. FIG. 13: is an example by which 36 solar power generation devices are arrange | positioned, for example as a solar power generation system of 2nd Embodiment.

[Problems to be solved by the present disclosure]
Since the concentrating solar power generation panel is supported by a single support for tracking the sun, for example, the light receiving surface of the panel as a whole is large. Therefore, when the wind pressure is applied, a large load is applied to the support. It takes. If the column is made extremely robust, it will be able to withstand large loads well, but there is also a trade-off with the cost, and in practice this means selecting a reasonable strength.
Therefore, even if the weather is fine, if strong wind blows on the panel, it will temporarily shift to the retracted attitude (horizontal attitude) for safety of the equipment, and if the wind is cured, it will return to the original sun tracking attitude Control to return. In the retracted position, the wind pressure can be avoided as much as possible by leveling the panel.

However, for example, in a large-scale solar power generation system, when all the panels are in the retracted position at the same time, the optical axis is largely shifted due to the characteristics of the concentrated solar power generation, and power can not be generated. In other words, the generation of several tens of MW to several hundreds of MW suddenly becomes zero. If the capacity of the power grid is large in a large metropolitan area with large demand, it may not be a problem because there is a large demand-supply adjustment capacity. However, the high solar radiation area suitable for the installation of the solar power generation system is often a desert area such as a desert. In such places, the capacity of the power network in the whole area is often small, and in this case, fluctuations of several tens of MW to several hundreds of MW may have a great impact on the local power network.

On the other hand, power companies are constantly adjusting the amount of power generation to meet demand. However, in the solar power generation system as described above, even if it is fine, the amount of power generation may suddenly become zero due to strong wind, and it is difficult to predict the amount of power generation. Suddenly, when the amount of power generation reaches zero, the power company must perform control to rapidly increase the generated power, such as thermal power generation, for example, to balance the supply and demand of power. This is difficult for power companies to handle.

In view of such a subject, this indication aims at alleviating the influence which it has on a power grid, even when the strong wind blows temporarily, in the photovoltaics system which adopts concentrating solar power generation.

[Effect of the present disclosure]
According to the present disclosure, in a solar power generation system that employs concentrated solar power generation, even when a strong wind temporarily blows, the influence on the power grid can be alleviated.

[Summary of the embodiment]
The subject matter of the embodiments of the present invention includes at least the following.

(1) The solar power generation system includes a solar power generation device group in which a plurality of solar power generation devices including a light collecting solar power generation panel and a support device supporting the light control panel in an attitude-controllable manner; A control having a function of instructing the supporting device on the posture to be taken of the photovoltaic panel in each of the plurality of photovoltaic devices based on the information on the wind at the place where the photovoltaic device group is installed. And the control unit, based on the information, determines the number of the photovoltaic panels in the retracted position when the photovoltaic panels are required to be in the predetermined retracted position. Solar power generation system, gradually increasing to the required number.

In such a solar power generation system, when it is necessary to take a retreating posture to some or all of the solar power generation panels due to strong wind, the plurality of solar power generation panels do not take a retreating posture all at once Increase the number of retract postures to the required number in stages. Therefore, it is possible to prevent a rapid decrease in generated power and to mitigate the influence on the power grid.

(2) In the solar power generation system according to (1), when there is the solar power generation panel taking the retreating posture, it is not necessary to take the retreating posture based on the information from that state. In this case, the control unit may reduce the number of the photovoltaic panels in the retracted position in stages.
In this case, for example, when the strong wind is stopped after taking the retreating posture, when it is not necessary to take the retreating posture, the number of photovoltaic panels taking the retreating posture is gradually reduced to restore the original posture. . Therefore, it is possible to prevent the sudden increase of the generated power and to mitigate the influence on the power grid.

(3) In the photovoltaic power generation system according to (1), in the photovoltaic power generation device group, a plurality of types of mechanical strengths of the support device are mixed, and the control unit is based on the information. When there is the solar panel which needs to take the retreat posture, the number of the solar panels taking the retreat posture is gradually increased to the required number in order from the one with the lower strength. You may do so.
In this case, the photovoltaic power generation panel of the supporting device whose strength is relatively low can be quickly retracted and protected from strong wind. The photovoltaic panel of the supporting device having a relatively high strength may not take a retreating posture depending on the wind strength. As described above, if the retracting posture is taken in consideration of the strength of the wind and the strength of the support device, the photovoltaic power generation device group as a whole loses the power generation capacity more than necessary while appropriately retracting. Nor.

(4) Further, in the solar power generation system according to any one of (1) to (3), a solar power generation device mounted with a crystalline silicon solar power generation module is additionally provided separately from the solar power generation device group. It is also good.
In this case, for example, when the light receiving surface faces upward and takes a horizontal retreating posture, a small but constant generated power can be obtained.

(5) On the other hand, from the viewpoint of the method, this is each solar power generation device group in which a plurality of solar power generation devices are arranged, in which a plurality of solar power generation devices supporting the concentration type solar power generation panel by the support device. It is a posture control method of a photovoltaics panel which a control part which controls a posture of a photovoltaics panel comprehensively, and acquires the information about the wind in the place where the above-mentioned photovoltaics group is installed, Based on the information, when there is the solar power generation panel that needs to take a predetermined retraction posture, the number of the solar power generation panels in the retraction posture is gradually increased to the required number, and the retraction posture is If it is not necessary to take the retreating posture based on the information from the state in which the solar power generation panel taking the moment is present, the number of the solar power generation panels taking the retreating posture is Reduce to Kaiteki, a posture control method for a solar power panel.

In such a posture control method of a solar panel, when it is necessary to take a retreating posture in some or all of the solar panels due to strong wind, the retreating posture is simultaneously performed on a plurality of solar panels. Increase the number of retractable postures to the required number in stages without making it take off. Therefore, it is possible to prevent a rapid decrease in generated power and to mitigate the influence on the power grid.
In addition, after the retracting posture is taken, when the strong wind is stopped and the need for the retreating posture is eliminated, the number of photovoltaic panels which are gradually retreated is reduced to return to the original posture. Therefore, it is possible to prevent the sudden increase of the generated power and to mitigate the influence on the power grid.

Details of Embodiment
Hereinafter, a photovoltaic power generation system and a posture control method of a photovoltaic power generation panel according to an embodiment of the present invention will be described with reference to the drawings.

First Embodiment
<< solar power generation device >>
FIG.1 and FIG.2 is the perspective view which looked at the photovoltaic power generation apparatus of one group of condensing type from the light-receiving surface side and the back side, respectively. In FIG. 1, the solar power generation device 100 is provided with the solar power generation panel 1 of the shape which continued in the upper part side, and was divided into right and left by the lower part side, and its support apparatus 2. FIG. The solar power generation panel (array) 1 is configured by arranging the concentrating solar power generation modules 1M on a rack 11 (FIG. 2) on the back side. In the example of FIG. 1, the solar power generation panel 1 is comprised as an aggregate | assembly of a total of 200 condensing solar power generation modules 1M, for example.

The supporting device 2 includes a support 21, a foundation 22, a two-axis drive unit 23, and a horizontal shaft 24 (FIG. 2) as a drive shaft. The lower end of the column 21 is fixed to the base 22 and the upper end thereof is provided with a two-axis drive unit 23. In the vicinity of the lower end of the support 21, a box 13 (FIG. 2) for electrical connection and electrical circuit storage is provided.

In FIG. 2, the foundation 22 is firmly buried in the ground to the extent that only the upper surface is visible. With the foundation 22 buried in the ground, the columns 21 become vertical and the horizontal axis 24 becomes horizontal. The two-axis drive unit 23 can rotate the horizontal axis 24 in two directions of an azimuth angle (an angle with the column 21 as a central axis) and an elevation angle (an angle with the horizontal axis 24 as a central axis). The horizontal shaft 24 is fixed so as to be orthogonal to the reinforcing material 12 which fixes and reinforces the gantry 11. Therefore, when the horizontal axis 24 pivots in the azimuth or elevation direction, the photovoltaic panel 1 also pivots in that direction.

In addition, although the support apparatus 2 which supports the solar energy power generation panel 1 by one support | pillar 21 was shown in FIG. 1, FIG. 2, the structure of the support apparatus 2 is not restricted to this. In short, any supporting device that can support the photovoltaic power generation panel 1 so as to be movable in two axes (azimuth, elevation) can be used.

FIG. 3 is a connection diagram showing an outline of an electrical connection as an example. For example, a drive control unit 3 is provided in the box 13. The drive control unit 3 drives the motor 23a for driving the azimuth angle and the motor 23e for driving the elevation angle to perform the tracking operation so that the photovoltaic panel 1 faces the sun. The normal tracking operation is thus performed locally for each solar power generation apparatus 100.

On the other hand, a signal of attitude control can be given to the drive control unit 3 also from the upper control unit 7. The attitude control signal from the control unit 7 has priority over the local tracking operation performed by the solar power generation apparatus 100. The wind speed of the place where the solar power generation device 100 is installed is detected by the wind speed sensor 7a. The detection output of the wind speed sensor 7 a is given to the control unit 7. It can be said that the wind speed sensor 7 a is a part of the control unit 7. However, the control unit 7 may be provided separately from the solar power generation device 100. The control unit 7 includes, for example, a computer, and executes necessary software (computer program) to realize necessary control functions. The software is stored in a storage device (not shown) of the control unit 7.

Moreover, the output (direct current) of the solar power generation panel 1 is converted into alternating current power by the power conditioner 6, and the alternating current power is sent to a substation equipment not shown. The power conditioner 6 is provided, for example, for each of the solar power generation devices 100. AC power based on each output is sent from the plurality of photovoltaic power generation devices 100 to the substation equipment.

For example, the solar panel 1 at night is in a horizontal position. Along with the sunrise, the solar panel 1 faces the direction of the sun rising from the horizon and assumes a generally vertical posture close to the state of FIG. After that, in order to follow the movement of the sun, it operates at an azimuth angle and an elevation angle so that the light receiving surface always faces the sun. When the sun goes down, the solar panel 1 turns to the direction of the sun sunk to the horizon and takes a substantially vertical posture close to the state of FIG. 1 again. After sunset, the solar panel 1 is in a horizontal position. Such an operation is performed every day unless a strong wind blows.

FIG. 4 is a perspective view showing an example of a state in which the light receiving surface of the solar panel 1 faces the sun.
In addition, the photovoltaic power generation panel 1 in the retracted position is, for example, horizontal, and the wind is likely to pass through, and the wind pressure is not easily received.

"Solar power system"
FIG. 5 is a schematic view showing a state of the solar power generation system 300 including, for example, a total of 64 solar power generation device groups 200, in which eight solar power generation devices 100 are arranged vertically and horizontally, for example. The control unit 7 is communicably connected to all the solar power generation devices 100, and can control the attitude of each of the solar panels 1 individually and collectively. As described above, the attitude control by the control unit 7 is executed prior to the local sun tracking operation of each of the solar power generation devices 100.

退避 Shipping at high winds》
Here, for example, it is assumed that the 64 solar power generation devices 100 are all the same type, and the strength of the support device 2 is also the same.
6 to 9 show the solar power generation device 100 in a simplified manner and represented by square symbols. The white symbols indicate the attitude to track the sun, and the hatched symbols indicate the retraction attitude.

Here, for example, it is assumed that the wind speed at the site where the solar power generation device group 200 is installed has reached a level of “strong wind” that requires taking a retreat posture. In this case, first, as shown in FIG. 6, for example, the control unit 7 causes the solar power generation device 100 on the left side of the figure to shift from the posture for tracking the sun to the retracted posture. That is, there are eight retreating postures, and the remaining 56 are still postures to track the sun.

Next, in FIG. 7, the control unit 7 also shifts the attitude of tracking the sun from the attitude of tracking the sun to the retracted attitude also with respect to the photovoltaic power generation apparatus 100 in the second row. That is, the retraction attitude is increased to 16 and the remaining 48 are still in the attitude to track the sun.
Then, as long as strong wind continues, the attitude is shifted stepwise to the retreating posture one row at a time, and in FIG.
Finally, in FIG. 9, all the solar panels 1 are in the retracted position.

Since the actual wind blows at random, it does not always shift in the order of FIG. 6 to FIG. For example, if the wind recovers in the middle of the states of FIGS. However, even if all the photovoltaic panels 1 finally become in the retracted position, they do not all simultaneously move into the retracted position, and the number of shifting to the retracted position in stages will increase to the necessary number.

Here, the relationship between the attitude of the photovoltaic panel 1 and the generated power will be described. The photovoltaic power generation panel 1 configured by the concentrating solar power generation module 1M is a configuration of an optical system that condenses sunlight and guides it to a small power generation element. Therefore, the power generation amount is zero when the retraction attitude is reached.

FIG. 10 is a diagram showing a change in generated power when all the groups of the solar power generation device group 200 are simultaneously retracted due to strong wind, for comparison. In this case, at the start of evacuation, the generated power will be zero at a stretch. That is, the impact on the power grid is large.

FIG. 11 is a diagram showing a change in generated power when the retracting posture is taken step by step in the same manner as in FIGS. 6 to 9 described above. That is, the generated power decreases in eight stages. Therefore, the impact on the power grid can be mitigated. In this case, the support device 2 needs to have a strength capable of withstanding strong winds for at least a time T until it decreases in eight stages.

FIG. 12 is a diagram showing a change in generated power when the solar power generation apparatus 100 is shifted to the retracted posture by stepwise reducing the holding time of one stage as much as possible. In this case, the characteristic of the decrease in the generated power approaches a straight line, but there is no change in the gradual change.

In the above example (FIGS. 6 to 9), the number of the solar panels 1 entering the retracted position is increased by one row from the left side of the figure, but this is merely an example for the convenience of description. , From any column. Also, the evacuation posture may be randomly entered at a predetermined number regardless of the row. In short, it is only necessary to increase the number of photovoltaic panels 1 in the retracted position stepwise to the required number.

In addition, when the strong wind stops, for example, the number of photovoltaic panels 1 that return to the original sun tracking posture in a stepwise manner by following the reverse process in the order of FIG. 9, FIG. 8, FIG. You can increase it.
That is, when there is the photovoltaic power generation panel 1 taking the retreating posture, the control unit 7 takes the retreating posture when it is not necessary to take the retreating posture based on the wind information from that state. Reduce the number of photovoltaic panels 1 gradually. As described above, when the strong wind stops and it is not necessary to take the retreating posture, the number of the photovoltaic panels 1 in the retreating posture is gradually reduced to return to the original posture. Therefore, it is possible to prevent the sudden increase of the generated power and to mitigate the influence on the power grid.

Second Embodiment
Next, in the solar power generation system according to the second embodiment, the appearance of the solar power generation apparatus 100 is substantially the same as that of FIG. 1, but the support device 2 supports the load when receiving the wind pressure. It was made to mix two or more kinds of strength of. For example, it is possible to prepare a plurality of types of strengths of the support 21 by changing the diameter of the support 21, thickness of metal, material and the like. Also, the strength of the support device 2 can be prepared in a plurality of types by changing the degree of reinforcement of the portion where stress is likely to be concentrated.

FIG. 13: is an example by which 36 solar power generation devices 100 are arrange | positioned, for example. Of the 36 groups, the strength of the supporting device 2 is set to, for example, six levels, and each group is set to six. The solar power generation apparatus 100 is classified into A, B, C, D, E, F from high strength ones, and the threshold for shifting to the retreat posture at the time of strong wind, for example, A with the highest strength, wind speed 20 m / m A threshold of 10 seconds or more lasting for s or more is used as the threshold, and F having the lowest intensity is a threshold for 8 seconds or more of the wind speed of 14 m / s or more. B, C, D, and E are intensities between A and F. That is, it is assumed that the relationship of strength is A> B> C> D> E> F. Note that these numerical values are merely an example for explanation. Further, the arrangement of A to F in FIG. 13 is merely an example for the convenience of description.

For example, if the wind speed reaches a threshold of F, F enters the evacuation operation. If the wind speed reaches a threshold of E, F and E enter the evacuation operation. If the wind speed reaches a threshold of D, F, E, D enter the evacuation operation. If the wind speed reaches a threshold of C, F, E, D, C enter the evacuation operation. If the wind speed reaches a threshold of B, F, E, D, C, B enter the evacuation operation. Then, if the wind speed reaches a threshold of A, all of F to A enter the evacuation operation.

The actual wind does not reach the threshold value of A suddenly from a weak wind state and gradually becomes stronger, so it is rare that at least all of them suddenly become in the withdrawal posture, and transition to the withdrawal posture in stages. The number increases. This can prevent the generated power from suddenly becoming zero. That is, the influence on the power grid can be mitigated. Even when the strong wind is relieved and return from the retreat posture, it is possible to suppress the rapid increase of the generated power and alleviate the influence on the power network by increasing the number of stepwise return.

As described above, in the second embodiment, a plurality of mechanical strengths of the support device 2 are mixed in the solar power generation device group 200, and the strength is low when it is necessary to take a retreating posture. Take a posture to evacuate to the required number in a step-by-step order from the one side. In this case, the photovoltaic power generation panel 1 of the supporting device 2 having a relatively low strength can be quickly retracted and protected from strong winds. The photovoltaic power generation panel 1 of the supporting device 2 having a relatively high strength may not take a retreating posture depending on the wind strength. As described above, if the retracting posture is taken in consideration of the strength of the wind and the strength of the support device 2, the photovoltaic power generation device group 200 as a whole can generate power more than necessary while appropriately retracting. There is no harm.

<Other devices common to each embodiment>
For example, the following may be considered as another common measure that may be added to the above-described embodiments.
Aside from the solar power generation device group 200 carrying the light collection solar power generation panel 100, a solar power generation device carrying a crystalline silicon solar power generation module may be additionally provided. For example, several solar cells may be mixed in the solar power generation device group 200, or may be separately provided. The supporting device 2 is the same as that of the solar power generation device having the crystalline silicon solar power generation module mounted thereon, and the same applies to the retraction posture.

As described above, if a solar panel is mounted on which a crystalline silicon solar power generation module is mounted, for example, a constant generated power can be obtained although the light receiving surface is directed upward and in a horizontal retraction posture. That is, the generated power does not become 0 even in the retreat posture. Therefore, even if all the solar panels are in the retracted position, the influence on the power grid can be mitigated.

<Summary>
As described above in detail, the solar power generation system 300 includes the solar power generation device group 200 and a plurality of solar power generation devices based on the information on the wind at the location where the solar power generation device group 200 is installed. And a control unit 7 having a function of instructing the support device 2 on the posture to be taken of the photovoltaic panel 1 in each of 100. Then, when there is a photovoltaic panel 1 that needs to take a retreating posture based on wind information, the control unit 7 gradually requires the number of the photovoltaic panels 1 taking a retreating posture. Increase up to

In such a solar power generation system 300, when it is necessary to take a retreating posture in some or all of the solar power generation panels 1 due to strong wind, the plurality of solar power generation panels 1 take a retreating posture all at once. The number of retractable postures is gradually increased to the required number without being reduced. Therefore, it is possible to prevent a rapid decrease in generated power and to mitigate the influence on the power grid.

<Supplementary Note>
Note that at least a part of each of the above-described embodiments may be arbitrarily combined with one another.

It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is shown by the claim, and it is intended that the meaning of a claim and equality and all the changes within the range are included.

DESCRIPTION OF SYMBOLS 1 solar power generation panel 1M condensing solar power generation module 1S crystal silicon solar power generation module 2 support apparatus 3 drive control part 6 power conditioner 7 control part 7a wind speed sensor 11 mount 12 reinforcement 12 box 21 support 22 foundation 23 2 Axis drive 23a Motor 23e Motor 24 Horizontal axis 100 Photovoltaic generator 200 Photovoltaic generator group 300 Photovoltaic system

Claims

A solar power generation device group including a plurality of solar power generation devices arrayed including a light collecting solar power generation panel and a support device supporting the light control panel in a posture-controllable manner;
It has a function to instruct the supporting device on the posture to be taken of the photovoltaic panel in each of a plurality of the photovoltaic devices based on the information on the wind at the place where the photovoltaic group is installed And a control unit,
When the solar power generation panel needs to take a predetermined retraction posture based on the information, the control unit needs the number of the solar power generation panels in the retraction posture in a stepwise manner. Solar power generation system to increase.
When there is the solar power generation panel taking the retreating posture, the control unit takes the retreating posture when it is not necessary to take the retreating posture based on the information from that state. The solar power generation system according to claim 1, wherein the number of the solar power generation panels is gradually reduced.
In the group of solar power generation devices, a plurality of mechanical strengths of the support device are mixed,
When there is the solar power generation panel which needs to take the retreating posture based on the information, the control unit counts the number of the solar power generation panels taking the retreating posture from the side with the lower strength The solar power generation system according to claim 1, wherein the number is increased stepwise to the required number in order.
The solar power generation system according to any one of claims 1 to 3, wherein a solar power generation device carrying a crystalline silicon solar power generation module is provided separately from the solar power generation device group.
Control that comprehensively controls the attitude of each photovoltaic panel in a photovoltaic power generation group in which a plurality of photovoltaic power generation apparatuses supporting a concentration type photovoltaic power generation panel supported by a supporting device so that attitude control is possible A method for controlling the posture of a solar panel, which is executed by
Obtaining information on the wind at the place where the solar power generation device group is installed;
In the case where there is the solar power generation panel that needs to take a predetermined retraction posture based on the information, the number of the solar power generation panels in the retraction posture is gradually increased to the necessary number,
If it is not necessary to take the retreating posture based on the information from the state in which the solar power generation panel taking the retreating posture is present, the number of the solar power generation panels taking the retreating posture may be Reduce gradually
Attitude control method of photovoltaic panel.